Gas Barrier Performance

Gas barrier performance is the ability of a film or packaging material to resist the transmission of gases such as oxygen and water vapor.

This helps maintain the quality of food and pharmaceuticals for a long period of time.

For example, blocking oxygen prevents food from oxidizing and preserves its freshness and flavor. In addition, blocking water vapor can also prevent moisture-sensitive products from deteriorating.

To enhance gas barrier performance, multilayer films using aluminum foil or special resins are commonly used.

Despite its low crystallinity, Nichigo G-Polymer™ exhibits higher gas barrier performance than conventional PVOH, owing to its high hydrogen bonding strength.

Nichigo G-Polymer™ has a 30- to 600-fold higher oxygen gas barrier performance under dry conditions compared to ethylene vinyl alcohol (EVOH), which is commonly used as an oxygen gas barrier material.

Sample: solution coating film (single layer film is used for Nylon 6 and polypropylene)
Measurement conditions: 20°C, dry

Please use the following simulator to check the oxygen transmission rate according to material, structure and thickness.
Oxygen transmission rate simulation soft (GTR Simulator Lite)

Nichigo G-Polymer™ demonstrates the highest hydrogen gas barrier performance among thermoplastic resins.

Sample: single layer film
Measurement conditions: dry
Nichigo G-Polymer™, EVOH: 41°C
Nylon resin: room temperature

Nichigo G-Polymer™ demonstrates extremely high carbon dioxide gas barrier performance.

Sample: biaxial stretched film
Measurement conditions: 20°C, dry

The gas barrier performance of Nichigo G-Polymer™ is humidity-dependent.

Samples: PP/tie/Nichigo G-Polymer™ BVE8049P (or EVOH)/tie/PP multilayer film
Measurement conditions: 23°C

Please use the following simulator to check the oxygen transmission rate according to material, structure and thickness.
Oxygen transmission rate simulation soft (GTR Simulator Lite)

Nichigo G-Polymer™: BVE8049Q (extrusion cast film: BVE8049P)
Measurement method: cup method
Sample: 30 μ single layer film